Final answer:
A tennis ball rolling off the Burj Al Arab's tennis court will travel horizontally at 8 m/s and fall vertically under the force of gravity, exhibiting projectile motion until it reaches the ground.
Step-by-step explanation:
When the tennis ball rolls off the outdoor tennis court of the Burj Al Arab in Dubai, which is 211 meters above the ground, it will begin to fall towards the ground, following the path dictated by the laws of projectile motion. Since the ball is given an initial horizontal velocity of 8 m/s, it will not only fall vertically under the influence of gravity but will also continue to move horizontally forward at this speed until it reaches the ground. This can be categorized as a physics problem involving two-dimensional motion, where the usual approach is to decompose the motion into horizontal and vertical components and apply kinematic equations accordingly. In this scenario, the vertical motion is accelerated due to gravity, while the horizontal motion is uniform because no horizontal forces are acting on the ball (ignoring air resistance).